Door-fastening.



CHM 0HLSEN. 000R FASTENING. APPLICATION FILED SEPT. 22. 1911.

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Patented May 7, 1918.

of an improved device of this CHARLES Jlllll. OHLSJEN, OF CHICAGO, ILLINOIS.

DOOR-FASTENING.

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Specification of Letters Patent.

Patented May fr, ra ls.

application filed September 22,1917. fierial Ito. 1923M.

To all whom it may concern a 1 Be it known that I, CHARLES M. O LsEN, v a citizen of. the United States, residing at Chicago, in the county of Cook and State 5 of Illinois, have invented certain new and useful Improvements in Door-Fastenings, of which'the following is a specification.

vMy invention relates to door fastenings and has for its-primary object the provision character b means" of which a door, normally held 'fastened in closed position by a spring so stifi' that an ordinary person, unaided, cannot bend it, may be opened by striking the de vice from the exterior of the door with the 7 wheel or fender of an automobi A further object is the provision of manually operable means whereby the door may be opened from the inner side and, if desired, may be held in unfastened position.

Other objects and advantages of the invention will appear from the following description taken in conjunction with the accompanying drawings which form a part of this specification and illustrate the preferred embodiment of the invention.-

In the drawings: Figure 1 is a front or exterior elevation of a pair of doors carrying my invention, 80 and shows also a fragment of the garage wall in which the doors are hung:

Fig. 2 is a rear or interior elevation of the parts shown in Fig. 1':

Fig. 3 is a section taken approximately on line 3-3 of Fig. 1; and

Fig. 4.- is a perspective View of a shank guide which I employ.

In a garage wall 10 having a double door aperture 11, are hung a pair of inwardly opening doors 12 and 13 mounted on spring hinges 14 so that they will open automatically when released from their fastenings. A vertical slot 15 is cut in the door 12 and a leaf spring 16 is positioned in the slot and fastened by its lower 'end to the inner face of the door. This spring is bowed outwardly through the slot, preferably so far that it protrudes considerably from the outer surfaceof the door, and it bends inwardly so as to reenter the slot near the top thereof. This spring 16 is extremely stifi' so that the unaided efforts of the ordinary erson cannot bend it, but it may readily e bent by a blow from the fender or wheel of'an automobile. By the use of such av this bent end is pierced to stand 0 strong spring I provide a door fastening device not easily released by unauthorized I persons without the use of an automobile or other movable body of large inertia.

Somewhat above they top of slot 15 the doors are each fitted. with horizontally alined bar receiving brackets 17 and 18 which are open at the top in a well-known manner and receive a fastening bar 19, to secure the doors in closed position. By elevating the bar into the dotted line of Fig. 2 the doors are released to the action of their spring hinges. At one end the bar 19 is bent outwardly of the door 13 through a small vertical slot provided, a11d the hole pierced in a stud 21 rivete to the outer face of door. 13. A padlock 22 may be passed through these two elements to lock the doors closed.

through the guide 23 which turns the in- Ward movement of the upper end of the spring into vertical reciprocation of the shank and bar.

The spring 16 normally holds bar 19 in its lower position, fastening the doors closed but the'bar may be raised and the doors released bythe impingement of an automobile wheel 25 or fender 26 against the outer side of the spring. To facilitate striking the-spring with the wheel of a vehicle I 'rivet' a bumper 27'to the spring 16, placing it horizontally.

Extra fastening means may be employed in the form oftwo ordinary,

posi te vertically reposition cipro cable bolts 28 and 29 respectively positioned to enter bolt holes provided in the lintel and threshold of the opening 11. These bolts are mounted in keepers 31 and 32 respectively and at their inner ends are pivoted to a lever 33 which oscillates about a stub shaft 3 1. A bolt arm 35 fixed to bolt 29 rides in a horizontal slot 36 formed in bar 19 and reciprocates the bolts withthe bar to draw them.

An angle'plate 37, positioned near the bottom of slot 15 and protrudin back of'the slot, forms the fulcrum for a and lever 331110 which, by means of alink 39, is connected to the inner side of spring 16 near its center as at 41. As the link is pivoted to the lever near the fulcrum a pull on the lever will enable the ordinary person to bend the spring inwardly and so release the closed doors from within the garage. The lever 38 carries a rack 42 adapted to be engaged by a pawl 43 pivoted to the door 12. By placing the pawl in one of the lower notches of the rack the bar 19 can be held out of the brackets 17 and 18.

My invention is of use, for instance, in connection with the doors of a public garage. During a storm it is necessary to keep the doors shut, yet those wishing to store their cars or obtain repairs can open the doors and drive into the garage without .a mon'ients waiting or dismounting into the storm. This is accomplished by allowing the automobile to drift against the bumper 27; the inertia of the heavy car readily bending the spring inward sufiiciently to raise bar l9 from the brackets 17 and 18 and simultaneously withdraw bolts 28 and 29. Obviously it may be adapted to a single door instead of double doors.

While I have illustrated and described the preferred embodiment of my invention, it is obvious that one skilled in the art may make modifications thereof without departing from the spirit of the invention. I

- wish, therefore, not to be restricted to the precise embodiment shown except in so far as the same is limited in the appended claims.

I claim:

1. The combination with a pair of doors mounted to swing inwardly, of a stiff leaf spring bowed outwardly of one door and fixed thereto by its lower end, horizontally alined brackets on the doors above the spring, a reciprocable bar movable into the brackets to fasten the doors in closed position, a depending shank on the bar secured at its lower end to the free end of the spring, and a guide for the shank fixed to said one door and positioned to limit the shank to vertical movement.

2. The combination with a'pair of doors mounted to swing inwardly, of a stifi leaf brackets to fasten the doors in closed posh fixed thereto by its lower of one door and end, horizontally alined brackets on the doors above the spring, a reciprocable bar movable into the spring bowed outwardly tion, a depending shank on the bar secured at its lower end to the free end of the spring, a guide for the shank fixed to said one door and positioned to limit the shank to vertical movement, and latch mechanism including a pair of vertically reciprocable bolts one of which is connected to said bar for movement therewith.

3. The combination with a pair of doors mounted to swing inwardly, of a stifi. leaf spring bowed outwardly of one door and fixed thereto by its lower end, horizontally alined brackets on the doors above the spring, a reciprocable bar movable into the brackets to fasten the doors in closed position, a depending shank on the bar secured at its lower end to the free end of the spring, a guide for the shank fixed to said one door and. positioned to limit the shank to vertical movement, and a horizontal bumper fixed to the spring outwardly of said one door.

l. The combination with a door, and devices for fastening the same in closed position including a member movable to fasten or release the door, of vehicle operated means exposed outwardly of the door for moving said member to releasing position and normally spring pressed to hold the member in door-fastening position, and a lever manually operable from the inner side of the door for moving the member to releasing position.

5. The combination with a door, and devices for fastening the same in closed position including a member movable to fasten or release the door, of vehicle operated means exposed outwardly of the door for moving said member to releasing position and normally spring pressed to hold the member in door-fastening position, a lever manually operable from the inner side of the door for moving the member to releasing position, a rack on the lever, and a pawl pivoted to the door and engaging the rack to hold the lever in door-releasing position.

6. The combination with a door having a slot, of door fastening elements carried thereby, a stifi leaf spring bowed outwardly of the door, fixed thereto at its lower end and operatively connected at its free end to said elements, a lever fulcrnmed near said spring, and a link connecting the center of the spring with a point on the lever near said fulcrum.

7. The combination with a door having a slot, of door fastening elements carried thereby, a stiff leaf spring bowed outwardly of the door, fixed thereto at its lower end and operatively connected at its free end to said elements, a lever fulcrumed near said spring, a link connecting the center of the spring with a point on the lever near said fulcrum, a rack on the lever, and a pawl pivoted on the door and engaging the rack to maintain tension on said spring.

In testimony whereof I affix my signature. 

